indexer: remove info log (#6194)

## Description

Replace info log with Debug.

state/execution.go

@@ -167,7 +167,7 @@ func (blockExec *BlockExecutor) ApplyBlock(
 		return state, 0, err
 	}
 	if len(validatorUpdates) > 0 {
-		blockExec.logger.Info("updates to validators", "updates", types.ValidatorListString(validatorUpdates))
+		blockExec.logger.Debug("updates to validators", "updates", types.ValidatorListString(validatorUpdates))
 	}
 
 	// Update the state with the block and responses.

state/txindex/indexer_service.go

@@ -67,7 +67,7 @@ func (is *IndexerService) OnStart() error {
 			if err = is.idr.AddBatch(batch); err != nil {
 				is.Logger.Error("Failed to index block", "height", height, "err", err)
 			} else {
-				is.Logger.Info("Indexed block", "height", height)
+				is.Logger.Debug("Indexed block", "height", height)
 			}
 		}
 	}()